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Section 02200 <br />Earthworks <br />ame <br />Soil Liner Fill becomes overly wet due to precipitation or over watering, CONTRACTOR <br />shall allow the wet soil to dry to the specified moisture content range before recompaction <br />of fill and placement of geosynthetic materials. <br />7. CONTRACTOR shall assist CQA Monitor in obtaining soil samples for CQA testing. <br />Soil Liner Fill sampling shall be scheduled by CQA Monitor with CONTRACTOR to <br />facilitate CQA field testing. <br />8. CONTRACTOR shall maintain Soil Liner Fill stockpile areas in a free - draining condition. <br />The CONTRACTOR will maintain Soil Liner Fill stockpiles and Soil Liner Fill placed <br />within the limits of the valley leach facility to prevent the drying out of the surface. <br />9. CONTRACTOR shall compact corners and other areas inaccessible to driven compaction <br />equipment using hand- operated 500 -pound vibratory plate or vibratory smooth -drum <br />compaction equipment approved by MANAGER and CERTIFYING ENGINEER. <br />10. CONTRACTOR shall trim the surface of the Soil Liner Fill to the design grades shown on <br />the DRAWINGS. <br />11. CONTRACTOR shall roll the surface of the Soil Liner Fill with a smooth drum roller to <br />remove ridges and surface irregularities greater than 0.5 inches in height. CERTIFYING <br />ENGINEER shall determine if surface preparation is sufficient to place geomembrane. On <br />areas with slopes steeper than 3H:1V, CONTRACTOR shall adopt methods as necessary <br />to obtain the same final surface preparations that would be obtained by the passage of a <br />smooth -drum roller on flat or level ground. Pushing of compaction equipment by tracked <br />equipment shall not be performed. Wheel ruts on the surface of the Soil Liner Fill from <br />grading equipment shall be repaired by CONTRACTOR prior to placement of the <br />geomembrane by rolling the surface as approved by CQA Monitor. <br />12. CONTRACTOR will remove angular protruding rocks greater than 3/4 inches in diameter <br />from the compacted Soil Liner Fill surface. Indentations left in the Soil Liner Fill Surface <br />after removal of the rocks shall be filled with Soil Liner Fill or other suitable fill approved <br />by CQA Monitor, and compacted to achieve final grade. Areas of the Soil Liner Fill <br />surface with concentrated gravelly areas will have suitable fill approved by CQA Monitor <br />placed on top and compacted to achieve final grade. A maximum thickness of 0.5 inches of <br />suitable fill will be placed on the Soil Liner Fill. <br />13. MANAGER and CERTIFYING ENGINEER will identify any areas of significant <br />desiccation, crusting, or erosion of a lift surface. Soil Liner Fill surfaces found to have <br />desiccation cracks greater than 0.25- inches in width or depth, or which exhibit swelling, <br />heaving or other similar conditions shall be replaced or reworked by CONTRACTOR to <br />remove such defects. Desiccation cracks on the Soil Liner Fill surface less than 0.25- inches <br />in width or depth shall be compacted with a smooth drum roller. CONTRACTOR shall <br />take whatever steps necessary to prepare Soil Liner Fill surface to the satisfaction of <br />MANAGER and CERTIFYING ENGINEER, at no additional cost to CC &V. <br />14. CONTRACTOR shall maintain the Soil Liner Fill surface in a condition suitable for <br />geomembrane installation as specified in these SPECIFICATIONS and in the CQA Plan <br />until the surface is covered. CONTRACTOR shall repair all weather related damage to <br />Soil Liner Fill surfaces or other portions of the Work that have or have not been covered by <br />geomembrane, at no additional cost to CC &V. <br />S: \Projects \1125G Squaw Gulch Valley Leach Facililty Design \I - Tech Specs \02200.r0.tloc <br />Page 14 of 18 January 14, 2011 <br />Revision 0 <br />